Spot lamp



H. P. THOMPSON.

.SPOT LAMP.

m'PLlcMloN FILED c; |1, 1919.

Patented M117, 1922.v

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Patented lct. 17, 1922.

UNITED STATES HENRY P. THOMPSON, OF CHICAGO, ILLINOIS.

SPOT LAMP.

Application filed December 1'?, 1919. Serial No. 345,631.

To all wlw/m t may concern:

Be it known that I, HENRY P. THOMPSON, a citizen ofthe United States, residing at Chicago, in the county of @ook and State of Illinois, have invented a certain new and useful Improvement in Spot Lamps, of

' which the following is a full, clear, concise,

and exact description, reference beinghad to the accompanying drawings, forming a part of thls specification.

The present yinvention relates to spot lamps for automobiles, motor boats, etc., and

embodies .improvements upon the` form of spot lamp disclosed in my co-pending application, Serial Number 301,167, filed J une 2,

The device disclosed in my co-pending application embodies an automobile spot lamp arranged in combination with a novel form of remote control which is situated in the drivers compartment in convenient position for operation. The particular advantage of this remote control feature lies in the general facility with which the lamp can be operated, and in the fact that the lamp can be operated when the side curtainsof the car are down. feature particularly adapts the spot lamp touse on limousines andother closed cars by reason of the control thereof being located in the drivers compartment.

The present invention is particularly conconcerned with the provision of an improved form of locking means for a spot lamp of the above description. This locking means is necessitated by the fact' that the spot lamp is subjected to severe vibration and arring from the motion of the automo bile.y and it is therefore imperative that'y means be provided forelfectively holdingv the lamp in its adjusted position. y It is the primary object of the present invention to provide such locking means, preferably in the form of a positive lock orv detent 'which is incapable of being jarred loose by the vibration of the machine. A secondary object of the invention .is to provide a form of positive lock or detent Which can be operated ivith facility and `which will not hinder or cucumber the .operation of the lamp.

Furthermore, this controlV The invention is illustrated in the accompanying drawing, wherein a preferred embodiment thereof is shown.

In the drawing:

Figure 1 is an elevational` vieivof my iinproved spot lamp mounted upon the Wind shield of an automobile;

Figure 2 is a longitudinal sectional view of the control mechanism; With the central portion thereof broken away; 1

Figure 3 is a transverse sectional taken on the 2; and

Figure L is yan enlarged sectional Viewl taken on the plane of the line 4.-4 of Figure 2. l

The spot lamp, which is designated 1 in its entirety, is of any preferred conventional type, and is supported on the end of a tubu lar arm 2 through which extends the operating mechanism for 'operating the lamp. The tubular arm 2 has a mounting in a suitable clamp 3 which is clamped to the side rail 4 of the Wind shield. Supported on the inner end of the tubular arm 2, and in a convenient position for operation by the driver, are two control handles 6 and 7. i

Referring to Figure 2,*the tubular arm 2 consists of a sleeve 8 through which extend an operating sleeve 9 and a central shaft 10. The operating sleeve 9 is arranged to be rotated by the control handle 6, and the operating shaft 10 is arranged to be rotated by the handle 7; On the outer end of the tubular arm 2 is mounted a rotatable head meinber 12, Which has Xed connection With the operating-sleeve 9. The outer sleeve 8 is set into a groove 13 recessed into 'the end of the head 12. Inside the head 12, the shaft 10 carries a bevel gear 14 which meshes with a similar bevel gear 15 on the short transverse shaft 16. The head member 12 is of forked formation, and'this stub shaft 16 is journaled in the fork extensions of the head'. The shaft 16 is held against outward dis--95 placement by the hub of the bevel gear 15 being` pinned thereto as at 17. A compression spring 18 bearing against the bevel gear lvprevents any vibrationand rattling due to play of the stub shaft 16. A semi-circu- 10o vvievv plane of the line 3-3 of Figure lar cover member 19 encloses the open front of the head 12.

rlhe upper end of the stub shaft 16 is provided with a collar 21, which bears upon the top of the head 12 and is adapted to receive the tubular socketextension 22 of the lamp 1. To permit of the convenient removing and replacing of the spot lamp for use about the car, there is provided a releasable detent pin 23, in the socket extension 22, adapted to have interlocking engagement with the .collar 21. The collar 21 is formed with an inverted keyhole slot 24, and one side of the collar is milled off to provide the recess 25. Co-operating with the keyhole slot Q4, is a keyhole slot 26 in the socket extension 22. The end of the detent pin 23 is provided with a short radially extending pin 27. It will be apparent that to release the spot lamp, the-handle extension 23 is simply rotated to bring the short pin 27 in line'with the keyhole slot, and the detent pin 23 is then retracted so as to bring the radial pin 27 into the recess 25. The lamp can then be removed for use about the car. The replacing of the lamp will be obvious from the foregoing.

Referring a gain to the control handles 6 and 7, it will be noted that the handle 6 con-A sists of a tubular stem formed with a split clamp 30 at its lower end which embraces a collar 31 on the operatingsleeve 9. The `end of the sleeve 9 is threaded to receive the collar 31, which is screwed up snugly against the outer housing sleeve 8.' The collar 31 is provided with a set screw y32 for rigidly clamping the collar to the threaded end of the sleeve 9. The clamp portion 3() is rigidly clamped on the collar 31 by a screw 33 which threads through the two depen ding ears of the clamp. The clamp mounting of the handle 6 on the collar 31 is advantageous in that it permits of angular adjusting of the handle relative to the plane of the lamp 1, hut it will be apparent that the handle 6 may be otherwise mounted on the sleeve 9.

The stem of the handle 6 contains a small plunger 34, which projects up through the enlarged end of the handle in the form of a depressible button 35. The enlarged end of the stein is counterbored as indica-ted at 36, to receive the enla-rged button end of the plunger. Between the button 35 and the bottom of the counterbore is confined a small compression spring 37, which normally tends to raise the plunger 34. The lower end of the plunger 34 has pivotal. connection with a detent pawl or dog 38, which is pivoted on a pivot pin 39 mounted transversely in the body of the stem. The dog 38 projects out through a slot 41 in the stem, and is adapted to engage between the teeth of a toothed ring 42 provided on the end of the stationary outer slee-ve 8.'

Threading onto the end of the operating the handle sleeve 9 is a second collar 43, which is provided with a reduced extension adapted to engage in a recess formed in the face of the collar 31, as indicated at 44. A portion of the collar 43 is formed co-eXtensive with the collar 31 and this portion is embraced by the .clamp 30, so that the clamp rigidly binds the two collars together. The outer portion of the collar 43 is formed with an enlarged flange having a. laterally projecting pin or stud 45 formed integral therewith. The stud 45 is adapted to engage in one of a series of holes 46 formed in the hub 47 of the handle 7 (Figure The handle 7 merely consists of a wheel or disc, the periphery of which is grooved to facilitate gripping by the fingers, and this wheel is mounted for shiftable movement on the squared extension 48, formed integral with the shaft 10. A bushing 49 is mounted in the circular bore of the hub, this bushing having a squared hole for engaging over the squared end 48. The hub of the hand wheel 7 is counterbored, as indicated at 51, to receive a compression spring 52 which is confined therein by a screw 53 tapping into the en-d of the shaft extension 48.

In the operat-ion of the lamphorizontal vadjustnient is given the lamp by retracting the handle 7 to the dotted line position (Figure 1,) to clear the pockets 46 of the stud 45. and then rotating the handle in either direction to swing the lamp to the right or the left as desired. Upon release of 7 the same is automatically shifted back into locking engagement, with the stud 45 projecting into one of the pockets 46. To obtain a vertical adjustment of the spot lamp, the handle 6 is actuated. by depressing the button and swinging the handle to the side or down, as indicated in dotted line position. This rotates the entire head 12 so as to swing the lamp in. a vertical plane, and by the co-operating adjustment to t-he handle 7 it will. be seen that any desired angular adjustment can be given the lamp 1. It will be apparent that when only the handle 6 is actuated, the handle 7 will move concurrently therewith by reason of its being locked thereto through the collar 43. lhen the handle 6 has been moved to its desired position and the button 35 is re* leased, the dog 33 automatically locks in the teeth 42 and holds the lamp against shaking down or vibrating out of position. The handle 6, being' rigidly locked to the stationary outer tube 8, and the handle 7 being locked to the handle 6 through the collars 43 and 31, i-t will be seen that this lat-ter handle is consequently also rigidly locked against vibra-tion and movement of the lamp.

It will be observed that in the case of each control, the positive lock thereof is releasable by a simple and convenient motion which does not cucumber the operation oi' the lamp.

It is to be understood, of course, that the foregoing details ot the particular vconstruction and arrangement may be varied Widely Within the scope of' the invention.

. I do not, therefore, intend limiting the ininner operatinor vention, except as defined Within the spirit and scope of the appended claims.

l. In combination, a spot lamp, a pair of concentric members for operating said lamp, a `relatively stationary locking member comprising a serrated ring concentric With the outer operating member, a control handle carried by said outer operating member, a paul carried by said contiolyhandle, spring means normally projecting said pawl int-o said serrated. ring, said control handle being released tor lamp actuating motion bythe pivotal tripping oit said paivl, a control handle on the inner operating member, and n'ieans ttor locking said .second control handle to said outer operating member.

2. In combination, a spot lamp, a pair or concentric members tor operating said lamp, na housing sleeve over said outer operating member, a serrated ring carried `by said housing sleeve, a vcontrol handle mounted on-said 4outer operating member, a second control handle on the inner operating member in immediate proximity to said first control handle, a pawl pivotally mounted on said first control handle, spring means normally projecting said pawl into said serrated ring, saidpaWl comprising operating means adapted Ato be (lepressed inwardly towards tlie'axis ot said operating members, and independent locking means for said vsecondcontrol handle, said latter locking means being released by shitting motion ot' said.` handle.

3. In combination, a lamp lor automobiles and tlie'like", a pair ot concentiic operating members tor` operating said lamp, a

relatively stationary locking member com-` prising a serrated ring, `a control handle on the outer operating member, a pawl pivotally mounted on `said control handle,

spring means normally projecting said pawl into said serrated ringysaid `pawl being released tlie depression of the same in- ,toward the axis of said; operating members, a rsecond control handle on the g member, and locking means for said latter handle intermediate said handles, said locking means comprising a locking member having a plurality of locking recesses'therein, and a cooperating meni ber having a vlocking projection adapted to engage in said recesses, one of said locking members'being carried by said second control handle and being released by shifting motion of said handle;

tsIn' combination, a spot lamp, a pair of concentric operating inembei's tor said lamp, a relatively stationary locking member comprising a ring having a plurality oi locking projections thereon, a control handle on the outer operating member, a paWl moving` with said control handle, spring means normally projecting said paWl into the locking projections of said ring, a second control handle on the inner operating member, locking means for said latter handle intermediate said handles, said locking means comprising a first locking member having a plurality of locking recesses therein, anda second locking member having a projection adapted to engage in said. recesses, one ot said locking members being carried. by said second control handle,

said loclringmembers being released by endwise motion of said handle, and spring means :for yieldably holdingy said locking members engaged.

5. In combination, a supporting member, a 4rotatable sleeve carried by said supporting member, an operating member within said sleeve, a head member at the outer endv of said sleeve and adapted for rotation thereby, a stem in said head member, a spot lamp carried on said stem, gearing connecting said stem With the operating member Within said sleeve, independent control handles at the linner ends of said sleeve and said operating member, a relatively stationary locking member, a latch-carried by the control handle on said sleeve for en-` gaging With said stationary locking member, and manually ieleasable positive locking means associated with the other of said control handles ttor locking the same to said. sleeve.

6. In combination, a rotatable sleeve, a shaft Within said sleeve, a head member carried by the outer end of said sleeve, a spot lamp i'otatablysupported on said head member, means operatively connecting said shaft with said spot lamp for transmitting rotary motion to the latter, a control handle at the inner end of said sleeve, means for positively locking said control handle to a relatively stationary point, a second control handle at the inner end of said shaft, and positive locking means for locking said second control handle to said sleeve, said latter locking means being releasable by translational motion of said second operat ing handle.

7. In combination, a rotatable sleeve,'a shaft therein, a head member carrie-d on the outer endvof said sleeve, a spot lamp rota tably supported on said head member, means connecting said shaft with said'spot'lam'p for rotating the latter relative to said head member, a first control handle mounted on the inner end of said sleeve, a stationary locking member, a latch carried by said con-y trol handle for locking the latter to `said locking member, a second control handle mounted on the inner end of said shaft, means for locking said control handles to-. gether, and a spring normially retaining said locking` means engaged, said locking means being disengaged by rectilinearr motion of said second operating handle.

8. In combination, a spot lamp for automobiles and the like, an outer housing sleeve, operating mechanism extending through said sleeve and having operative connection With said lamp for angularly adjusting the same, a control lever at one end of saidsleeve and havingl connection with said operating mechanism a notched ring on said sleeve, a locking detent cariied by said lever and normally engaging in said notched ring, a depressible button in said lever for releasing said locking detent, a collar having connection with said control lever, a control knob having operative connection With said operatingmechanism, and pin' and socket locking means between said collary and saidv control knob, said locking means being releasable by axial'movement of said control knob. l

9. In combination, a fixed support, two.

concentric members journaled in said support, a handle for actuating` the innei" concentric membei, means normally yieldably actuated to lock said outer concentric member to said support and to said inner inember, manually released means for releasing said outer member from said support to move with said inner member, or from said inner member to permit movement of said inner, vbut not said outer member, and a spot light connected'to said members for rotation about one axis by actuation of said outer member, andabout another axis at an angle to said first axis by actuation of sail inner member with respect to the outer.

l0'. In combination, a spot lamp for antoinobiles and the like, control means for ailgularly adjusting said lamp, operating means connecting said controlpmeans With said lamp, said operating means comprising a rotatable head member, a'stub shaft projecting from said head member and having an interlocking slot therein, a socket extension projecting from said lamp and adapted to be mounted on said stub shaft, and a locking pin in said socket extension (3o-operating with the interlocking slot in said stub shaft for releasably locking said socket extension and stub shaft together.

11. In combination, supporting member, a pair of concentric operating members extending through said 'supporting` member,

a head carried at the end of the outer operating member and rotatable therewith, a stem journaled in said hea-d at an angle to the axis of said outer operating member, means operatively connecting .the inner operating member with said stem for transmitting rotary motionthereto, a spot lamp carried by said stem, said spot lamp being detachable foruse as a-trouble lamp, and an electrical conductor extending tosaid spot lamp, said conductor being external of said supporting member and said operating members lwhereby the removal of said spot lamp is permitted.

12. In combination, a tubular supporting member, a pair of concentric operating members extending through said supporting member, controlmeans at one end of said operating members for actuating the same, a head carried by thecouter operating meinber and rotatable therewith, a stem journaled in said head, means operatively connecting said stem With the inner operating member, a spot lamp carried by said stem, and an electric conductor for said lamp extending thereto externally of said siip- 0 said concentric members directly to said stationary locking member, a second locking means operative to lock the other of said concentric members to said first concentric member, each of said looking lmeans beingy manually releasable for permitting rotation of its corresponding concentric member, i

housing supported at the outer end of oney of said concentric members and connected thereto for rotation thereby about the axis of said concentric members, a stem pivotally mounted in said housing, a spot lamp mounted on said stem, a vgear concentric with the axis of said concentric members and connected to the other of said concentric members, and a second gear connected .to said stem and meshing With said first gear.

14. In combination, a spot lamp, and operating mechanism therefor comprising a central shaft, a sleeve surrounding said shaft, a stationary tubular member supporting said sleeve, a control member on said sleeve, a second control member on said shaft, a stationary locking member comprising a plurality of locking recesses concentric with said sleeve, a manually releasable paivl moving with said first control member and adapted to engage in sai-d recesses for positively locking said control member, and independent detent means for connectinf` said second control member to said sleeve.

15. In combination, a spot lamp, and operating mechanism therefor comprising a central operating member, a sleeve surrounding said central operating member, a stationary tubular member surrounding said sleeve, locking means associated Vwith said stationary member and having a plurality and locking means for locking said control of locking recesses, a control member on members to each other.

said sleeve, a paWl moving with said con- In Witness whereof I hereunto subscribe l0 trol member and adapted for engagement my name this 12th day of December, A. D. with said locking recesses for positively 100k- 1919.

ing said control member, a second contro] member on said central operating member, HENRY P. THOMPSON. 

